<?php
function GrabImage($url,$filename=""){ 
	if($url==""):return false;endif; 
	if($filename==""){ 
		$ext=strrchr($url,"."); 
		if($ext!=".gif" && $ext!=".jpg"):return false;endif; 
		$filename=date("dMYHis").$ext; 
	} 

	ob_start(); 
	readfile($url); 
	$img = ob_get_contents(); 
	ob_end_clean(); 
	$size = strlen($img); 

	$fp2=@fopen($filename, "a"); 
	fwrite($fp2,$img); 
	fclose($fp2); 

	return $filename; 
} 

$img=GrabImage("http://news.bbc.co.uk/images/_1978837_detector_ap100.jpg",""); 
if($img):echo '<pre><img src="'.$img.'"></pre>';
else:echo "false";
endif; 
?>